n.
A rapid intermittent eye movement, as that which occurs when the eyes fix on one point after another in the visual field.
[French, twitch, from Old French, from Old North French saqiuer, to pull, from sac, sack. See sac.]
saccadic sac·cad'ic adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
